JPH06200434A - Method for exchanging feeding yarn - Google Patents

Abstract

PURPOSE:To provide a feeding yarn exchanging method capable of fairly judging the necessity for the exchange of feeding yarn for all spindles and enabling quick exchange of feeding yarn. CONSTITUTION:A feeding yarn exchange robot 6 to judge the necessity for the exchange of feeding yarn for each spindle 41 of a false-twister 1 and exchange the feeding yarn is traversed to judge the necessity for the exchange of feeding yarn for all spindles. Thereafter, the robot 6 is reciprocated between a yarn feeding station 5 and the objective exchanging spindle to perform the exchange of feeding yarn.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a yarn twisting and replacing method of a false twisting machine using a yarn feeding and changing robot which reciprocates along a creel stand, and more particularly, to determine whether or not the yarn feeding should be performed evenly for all spindles. The present invention relates to a yarn supply replacement method that enables determination and quick yarn replacement.

[0002]

2. Description of the Related Art A false twisting machine such as a draw false twisting machine is used to perform a false twisting process on a filament yarn. The false twisting machine is provided with a weight for false twisting the yarn and a creel stand for supplying the filament yarn to the weight via a heating unit. A large number of weights are arranged in a line. On the creel stand, the yarn feeding packages for each weight are mounted in a multi-row arrangement. Usually, two yarn feeding packages are used for one weight in a set. A yarn feeding station is provided facing one end of the row of the creel stands, and a yarn feeding robot that moves along the creel stands from the yarn feeding station is provided.

The yarn feeding exchange robot has a remaining yarn checking function for determining whether or not it is necessary to exchange the yarn feeding for each weight, and a yarn feeding exchange function for exchanging the yarn feeding. The remaining yarn check is performed by a photoelectric sensor mounted on the yarn feeding exchange robot. A photoelectric sensor is provided for each stage so that all stages can be checked while the yarn feeding robot is moving. Photoelectric sensor
It is provided at a predetermined position of each stage so that it can be detected whether or not there is a yarn at a predetermined position of the yarn supplying package. On the other hand, the yarn feeding exchange is performed by providing the yarn feeding exchange robot with an exchanging unit that can move up and down between stages and moving the exchanging unit to a desired stage.

The yarn feeding exchange robot has one new yarn feeding package fetched from the yarn feeding supply station, and runs along the creel stand while checking the remaining yarns of each yarn feeding package. There is. 2 of that weight
If at least one of the yarn supply packages is empty,
Therefore, stop immediately and start replacement. Then, returning to the yarn supplying station, the empty paper tube is discarded and a new yarn supplying package is taken in. In this way, the yarn supply package in the creel stand is replaced with a new one at any time.

[0005]

By the way, the above-mentioned conventional yarn feeding and replacing method has two problems that prevent the efficiency of the false twisting machine from being improved.

First, it means that the time required for checking the remaining yarn and replacing the yarn supply is long. The reason is that the moving speed of the yarn supplying robot cannot be increased and that it takes time to move the exchanging unit to a desired stage.

The reason why the moving speed of the yarn supplying robot cannot be increased is that if the moving speed is high, the point of view of the photoelectric sensor varies and the remaining yarn check cannot be performed accurately. Therefore, the moving speed cannot be increased during the remaining thread check.

The time for moving the exchanging section to a desired stage is required because it is not known in advance at which stage the yarn supplying exchange should be performed. Because there is no choice but to move to the stage.

The second problem is that the discovery of the weight which requires the yarn supply replacement is biased toward the side closer to the yarn supply station. Every time the yarn feeding exchange of one spindle is executed, the yarn feeding robot returns to the yarn feeding supply station, and the remaining yarn check is started from there. Therefore, the yarn feeding robot moves to the weight far from the yarn feeding station. The chances of coming will decrease.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems and to provide a yarn feeding method capable of quickly determining whether yarn feeding needs to be exchanged evenly for all spindles and performing rapid yarn feeding exchange.

[0011]

In order to achieve the above object, the present invention is to run a yarn feed exchange robot that determines the necessity of yarn feed exchange for each weight of a false twisting machine and exchanges the yarn feed. After determining whether or not it is necessary to replace the yarn supply over the entire weight, the robot is reciprocated between the yarn supply station and the replacement required weight to perform the yarn supply exchange.

[0012]

With the above construction, the movement speed cannot be increased in the step of the yarn feeding exchange robot determining the necessity of the yarn feeding exchange over the entire weight, but the time to return to the yarn feeding station is saved. Then, regardless of the distance from the yarn supplying station, all the weights are fairly judged as to whether or not the yarn supplying should be replaced.

Next, in the yarn feeding exchange process, it is not necessary to detect and position the photoelectric sensor which restricts the moving speed, so that the moving speed can be increased. Therefore, the time for replacing the yarn supply is shortened. Further, since the weight to be exchanged is stored, it is known in advance at which stage the yarn supply exchange is to be performed. It is possible to allow the exchanging section to move to that stage before the yarn feeding robot is stopped (that is, while moving from the yarn feeding station). Therefore, the time loss due to the moving time of the exchange section is eliminated.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

As shown in FIG. 2, the false twisting machine equipment includes a false twisting machine 1, a heating unit 2, a creel stand 3, a transfer line 4,
A yarn supplying station 5 and a yarn changing robot 6 are provided. Further, the false twisting machine 1 is provided with an auto doffer 62 for doffing.

In the false twisting machine 1, as shown in FIG. 4, the weight 41 is mainly composed of a twister 42 for twisting the yarn, and the weights are arranged in rows in the longitudinal direction of the false twisting machine 1. They are arranged side by side. In addition, the winder 43 that winds the thread
Are arranged below the weight 41 in multiple rows. Weight 41
The heating portion 2 is provided extending from diagonally above the weight 41 to substantially below the weight 41. A roller 44 is provided at the base end of the heating unit 2. The filament yarn from the creel stand 3 passes through the roller 44, the heating unit 2, and the weight 4
Has been sent to 1.

The creel stand 3 is formed by arranging holders 46 of the yarn supplying packages 45 along the row of the weights 41 so as to hold the yarn supplying packages 45 made of filament yarn in a multi-row arrangement. As shown in FIG. 5, two yarn feeding packages 45 for each weight 41 are held side by side along the longitudinal direction of the creel stand 3 at a position of the same height, two at any stage in the nearest row. It That is, one weight 41
There will be two yarn feed packages per hit. The yarn ends of the two yarn supplying packages 45 are tied together. When one yarn supplying package 45 becomes empty, the yarn is fed from the next yarn supplying package 45. In this way, the yarn supplying packages 45 are used in a set of two for each weight.

In a false twisting machine facility having two rows of weights 41 and two rows of creel stands 3 as shown in FIG. 2, both rows of weights 41 are provided back to back on the false twisting machine 1, and 10 rows are provided on one side of each row.
Eight weights are arranged. On the other hand, the creel stands 3 are provided on both sides of the false twisting machine 1, and the columns on one side of the creel stands 3 are made up of 36 rows with the upper and lower 6 stages as one row.

A yarn supply station 5 is provided facing one end of the row of the creel stands 3. The yarn supplying station 5 is provided so as to face the conveyor line 4 that sequentially conveys the yarn supplying packages, and a package transfer device 61 that appropriately receives the yarn supplying packages from the ceiling conveying device 60 on the conveying line 4 is provided. Yarn feeding station 5
Owns a continuous yarn supply package. The yarn supplying station 5 is in contact with the yarn supplying station 5, and the yarn supplying robot 5 is provided along the creel stand 3 as a starting point.
The moving area 7 of is set. An empty paper tube storage box 9 is installed at the starting point 8 of the moving area 7.

As shown in FIG. 3, the yarn feeding robot 6 for judging the necessity of the yarn feeding exchange of each weight 41 and exchanging the yarn feeding has a moving carriage 64 having wheels 31, etc. The rail 63 provided in the area 7 can be reciprocated. The yarn supplying robot 6 includes a photoelectric sensor 32 that detects the remaining yarn of the yarn supplying package 45, an exchanging unit 33 that mainly exchanges the yarn supplying package 45, and a storage device (not shown).

Two photoelectric sensors 32 are provided for each stage of the creel stand 3. Its height position is shown in FIG. That is, the photoelectric sensor 32 includes an outer residual thread sensor 51 and an inner residual thread sensor 52, and draws loci 54 and 55 along with the movement of the yarn supplying / exchange robot 6. The outer residual yarn sensor 51 is provided at a position for detecting its reflection when the yarn supplying package 45 is full. The inner residual yarn sensor 52 is provided at a position that detects its reflection when the yarn supplying package 45 is a half-ball and does not detect it when there is almost no residual yarn. When the yarn feeding exchange robot 6 sequentially passes in front of the two yarn feeding packages 45 of the respective weights, the outer residual yarn sensor 51 and the inner residual yarn sensor 52 are detected.
4 bits of information can be obtained for each spindle. The yarn feeding exchange robot 6 detects a state in which there is almost no remaining yarn in either yarn feeding package 45 from this 4-bit information, and when this state is reached, it is determined that the yarn feeding should be replaced.

As shown in FIG. 3, the exchange section 33 is provided on the side surface of the yarn feeding exchange robot 6 facing the traveling direction,
An elevating mechanism 34 for elevating and lowering to each stage position of the creel stand 3, an exchanging mechanism 35 for exchanging the yarn supply package,
It has a rotation mechanism 73 for rotating the exchange mechanism 35 from the position shown in the figure and inserting it into the creel stand 3. The elevating mechanism 34 includes a support 70 having a height substantially equal to that of the creel stand 3.
Of the sprocket 65, a chain 66 stretched between the sprockets 65, and a sprocket motor 67. A work table 68, which is moved up and down by turns with the exchange unit 33, is attached to the lifting mechanism 34 via a support member 69. The exchanging mechanism 35 includes a paper tube extracting mechanism 71, a yarn feeding and delivering device 72 in which a full package 45 is mounted, a cam mechanism 7.
4. The peg open mechanism 75 and the like.

Further, a protrusion 36 for positioning each row is provided on the upper part of the creel stand 3, and the yarn feeding robot 6 is provided with a limit switch 37 which is opened and closed by the protrusion 36. There is.

FIG. 6 shows a view of the creel stand 3 and the yarn supplying robot 6 from above. Creel stand 3
Two yarn feeding packages 45 are attached to each weight of the
It is stopped at the position 5a. The exchange unit 33 can exchange the yarn supply package 45a for the full package 45.

Next, the operation of the yarn feeding exchange robot 6 will be described with reference to FIG.
This will be described with reference to the flowchart of FIG. First, the necessity determination routine S
In 1, the starting point 8 of the movement of the yarn supplying robot 6 is set as the yarn supplying station 5, and the moving area 7 is moved at a low speed (S11). This speed is a speed at which the photoelectric sensor 32 can correctly determine whether or not it is necessary to replace the yarn at the correct position. When the protrusion 36 opens and closes the limit switch 37 during movement, a residual yarn check using the photoelectric sensor 32 is performed at each stage of each row (S12). Need to replace the yarn supply is 2
Of the individual yarn supply packages 45, one of the outer yarn remaining sensor 51 and the inner remaining yarn sensor 52 is transmitted,
When the outer residual yarn sensor 51 is transmitted through the individual yarn supply packages 45, the weight is determined to be a weight that needs to be replaced. That is, if there is even one yarn supply package 45 with no remaining yarn, it is determined that the weight needs to be replaced. If the weight is a weight that needs to be replaced, the row number and the step number are stored (S13). In this way, the yarn supplying robot 6 moves to the end point side of the creel stand 3 (S14). At this point, it is determined whether or not it is necessary to replace the yarn supply over all the weights, and all the weights that need to be replaced are stored. The yarn feeding robot 6 starts at a high speed at the starting point 8
Return to (S15). Then, it is checked whether there is even one replacement weight (S16). If there is no replacement weight, the necessity determination routine S1 is repeated. If there is one or more weights that need to be replaced, the process proceeds to the yarn supply replacement routine S2.

Next, in the yarn supply exchange routine S2, one memory of the weight to be exchanged is read (S21). The yarn supplying robot 6 holds one replacement yarn supplying package 45 and moves toward the row (S22). The moving speed at this time is sufficiently high. At the same time, the exchange unit 33
Is moved up and down to the position of the stage (S23). When the yarn feeding robot 6 is stopped due to the positioning of the line (S2
4), the exchange unit 33 has also arrived at the position of the stage. Therefore, the rotating mechanism rotationally moves the exchanging mechanism 35 into the creel stand 3, and the exchanging mechanism 35 removes the empty paper tube from the holder 46 of the creel stand 3 and mounts a new yarn supply package 45 (S25). Thread changing robot 6
Returns to the starting point 8, drops an empty paper tube into the empty paper tube storage box 9, and takes in the yarn supplying package from the yarn supplying station 5 (S26). If there is another weight that needs to be replaced in the storage device, the above operation is repeated. In this way, the yarn supplying robot 6 is reciprocated between the yarn supplying station 5 and the weight that needs to be exchanged to exchange the yarn.

As a result of performing the above steps (routines) S1 and S2, in the necessity determination routine S1, the moving speed cannot be increased by the onward movement, but the time to return to the starting point 8 is saved. Then, regardless of the distance from the yarn supplying station, all the weights are fairly judged as to whether or not the yarn supplying should be replaced.

Next, in the yarn feeding exchange routine S2, it is not necessary to detect and position the photoelectric sensor which restricts the moving speed, so that the moving speed can be increased. Therefore, the time for replacing the yarn supply is shortened. Further, since the weight to be exchanged is stored, it is known in advance at which stage the yarn supply exchange is to be performed. Before the yarn feeding robot 6 stops (that is,
Exchange section 3 (while moving from the yarn feeding station)
3 can move to that stage. Therefore, the exchange unit 3
The time loss due to the moving time of 3 is eliminated.

The creel stand 3 may be one in which the yarn supplying package is mounted in only one stage.

[0030]

The present invention exhibits the following excellent effects.

(1) Since it is possible to fairly judge whether or not the yarn supply needs to be replaced, it is possible to prevent the moving efficiency from decreasing even with a weight far from the yarn supplying station.

(2) Since the yarn supply can be quickly replaced, the weight does not stop waiting for the yarn supply replacement, and the moving efficiency does not decrease.

[Brief description of drawings]

FIG. 1 is a flow chart of a yarn supply replacing method of the present invention.

FIG. 2 is a plan view of a false twisting machine facility using the yarn supply exchange method of the present invention.

FIG. 3 is a side view of a yarn feeding exchange robot.

FIG. 4 is a detailed side view of the false twisting machine facility of FIG.

FIG. 5 is a partially enlarged view of the creel stand for explaining the method of determining the necessity of replacing the yarn supply.

FIG. 6 is a plan view of a creel stand and a yarn feeding exchange robot.

[Explanation of symbols]

 1 False Twisting Machine 3 Creel Stand 5 Yarn Supply Station 6 Yarn Supply Robot 41 Weight S1 Necessity Judgment Routine S2 Yarn Supply Routine

Claims (1)

[Claims] 1. A yarn feed exchange robot that determines the need for yarn feed exchange for each weight of a false twisting machine and exchanges the yarn feed while determining whether or not yarn feed exchange is required over the entire weight while running. After that, the above-mentioned robot is reciprocated between the yarn supplying station and the weight that needs to be exchanged to exchange the yarn.